Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dee3281ee9bf81afc1ec0d898dd4428407ec243385936dc8883ce8a44864a21e' 
  AND token = '7rN8Ctst5trRJpdEJlYqQaY5HMaP3P93uNb+okWOVHY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00505

JSON explain

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