Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '580410f478d517466878d4f61ef49c41e273a7d635ef3da5a6aeffdf61c24dc4' 
  AND token = 'VAWrkrgI3sCL+gYvsFjsBvTHrf6yCIzxToZmHrO0LH0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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