Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '26197be3087d329289f64d95da90cfd6e6d0367c2e1146b1c1932fa65f99f085' 
  AND token = 'VfBSEnYu8pogpmKuctNiZ+xLmnuLwAg3eYJrt7neUM8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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