Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '396abccee4f5ab0fcac25accaee1bcde7c335b51183ae9a63f8a88ac8b09da9b' 
  AND token = 'sjBLgV6AojRSmLF4EUPZhFUQdmZTrNIlpzoso05RLnU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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