Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1695ff5bcf373f5e33f9a4b8267f21803e66e3e6622675a73d542687f2d0db61' 
  AND token = 'aaX0HNBKwQuiX5GUL/fdsR5Ei1mxHnVfYYQtFImnKA8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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