Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8b93523b4675f5d612d95bdc06d245c388bff09970cf04dcba31c97e0a26b79e' 
  AND token = 'xK8wWwAd577K3LQqQKhTYudYabyojI7vl+qg8x5If4o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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