Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c33a39c5028c2c8b8349505db4e62374ed88041894c81b0e2d5206649201b87b' 
  AND token = 'AhRn/co5BV2Eg0pk7V7m/HXysoXanWiRBCwpNIl+87M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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