Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a4aace8ebae643d002200cb71a6c63c62bde70ee5dea25889288f139f3467206' 
  AND token = 'xs9alhmDSUZ5tpOIpjIiGA1Lp2yJaFD3kna+MweLUU8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00057

JSON explain

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