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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '94fadee5e568338618d035671f599a1aa80f41a68a24dee34480f3e9dbfb2040' 
  AND token = '0jBum1ldc50cXkGxf+10Md5qFIYDsMP4ZeDT7vbzdj0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}