Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c40f95098525b0c36267c16326969c0330d768bc25c2cf3639722ce63d781f41' 
  AND token = 'V6He2wT0THV4/XpxsEuoPGW9koPlgbAb4T5SIIdkAVY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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