Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7d259313ed7b6c95403e47db0c6c06c89497ad0f64ecfe64e16ffc548c5b6008' 
  AND token = 'HZp2Gj2SIsMFT5aHM+Jd2Us+e5H8iMHuMNMXarCDmXk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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