Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e69ea4d5cec9e8b4003199b3f12ad082e4fff858145fac147f49de4d6b733aaa' 
  AND token = 'EI1EJfa13tPj6FP56ovLOhGLaiMWtNQAZd0QZD9h8XM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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