Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2258cb4f560c89b85204a68c231fafe5fe2cbe1ee5f4177b0048557ecbaed0e8' 
  AND token = 'R45zPnGxHolJD5j/FJ+x82l45nhQY5LjI5PkqCS6tGs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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