Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'db5ce151842a0132ea312a53b1e0ce177264b4e523ff3da2583bdf552a0abb54' 
  AND token = 'ztC+vrjHZWRb8lJvpGS8SqU5J4RljLgtx2Tp6jjL3kY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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