Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'db6430e241dacb3498c6c74c67835206a538abb5c81eee84283ada5d72186cbc' 
  AND token = '9Fc8pRiWL7cSSOsK0JZ2UO/9PyLKe6eUWMS0oIScOXY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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