Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cdfab6a827d8c66ff49b1cbda7cb29a92d5fd94baf63520d525eea50106a522d' 
  AND token = 'kE4guWNux1uxq0OZUNWt3KDR4sRPplUIQY0/LfrqkgU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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