Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a58c196fe8163f01735493b1a4bbff71a16af7267a1da7819143fe95aa3d440b' 
  AND token = 'NSses9jSrw0hJBVM39cfc1uuYA2TOpv9SV3U4tXYlkA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}