Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8ce95f670b5628c85d2f71d74ab32135d4ae5d219dc66b06d984ccb5a26c6efc' 
  AND token = 'ayLfXE8dG6x8FvcjRkC4gQwtly485yoZHkgBx1FNpiY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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