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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f60d8d117a117d7327d6b149d9ae77a1c2a5735788bbbd5871668dd8e72278fa' 
  AND token = 'xM6z0zrABS1bLhoO8eeU1x8Tb7JCibSV1jW750QBVlI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00012

JSON explain

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