Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'be73153804c6e6975106847edc0ffa5d0769c77e895bb215b5a313c89f6cf330' 
  AND token = 'IEKpZYcZuXIWIp83PTPD0SoMDu94v9p90ihOY5y5P64=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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