Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bae697f7fdd878aca7914aa3e288bf6067f5820e104ffbef8616cba3da02179b' 
  AND token = 'O+AjnUYDFpj4Uxk43cGyxbribAJYav4ZgMsOIBIGjcE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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