Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fceeae089a3b185a2aa7222ed4b083647a7af6ea7540c5592023d65ab13eac7b' 
  AND token = 'tMSt7hbKhi9OaVeGI0FtSQuhHCmHxSMsUNzsuJr+N4w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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