Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9e3117353d7d13090bbbb84efdea86b3e94e870d19c0a735e8c3d0fe50e59883' 
  AND token = 'YHWCAlp8cp4NYkPvq059CokPQoHoWA6yci0c7xZLPAY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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