Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '49758f7b0a3229aeac434fe63e584d5a50a742e83bcf422f7a56db6806945490' 
  AND token = 'Camk//SWueq8zk2oJXsK+4rYWoyH5uhJzKlIa9QOLFc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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