Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '29e1154c8f71278b03145cd95c3060550d5f47810d7193ab8251a749c5443e24' 
  AND token = 'VP0XpPJANUL+QGMwSddTD1caj6BGkOaJxY5ERxV8F2k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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