Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '91f04018b40e1b20e7872c687bf9d364f8f97d592ded89a5e598c017c5b4e00f' 
  AND token = '7gAfhcYuUkog5YN86nSLJWQDWijkEN7WFPA1pNcDE1I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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