Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f8177e7411f66e4db4d8a95998dc13012567d8d43d099a24151e66081a103484' 
  AND token = 'FBabG8sSi7ZPUOXq7t2j/VUSQB9fIqJ/ydyqLMfop4I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00061

JSON explain

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