Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f6c01c62c9c3c4ca48c8a516d013cc75380f9c1185a76f56167fe54c16dbaca2' 
  AND token = 'ryb42gqShUbKEeFrw3PJDtssgMRPuq+BgvJ/OCPs9dE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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