Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '94c6c5d2014f9b943abd438c619de507376a6f941f7470a93e5b41a8d19b751b' 
  AND token = 'BSas1r9PUOM65Eu72vNhWDlUVTf7bxEm7//Ycty9Ku8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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