Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f0b170a3820d4577ea77a4fdea936de3d6f6a2f45ee30e664008e768484e541e' 
  AND token = 'Bgmffk77SqpQOOVtgVfRqeUtwG3ROc7IO0OefTJwIqA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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