Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd61c4e35a6da344b84a8d1b56e1961bdcdeedc605c5d41748794c0726cd92939' 
  AND token = 'ySy9zTmex6tZXhfh7UqfhvYfSH63r77Noa8JSiH2y8I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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