Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ad0b2e63426e9e6652462cb8932b20bf55dca269603799abd0bf3e9c77c7e82a' 
  AND token = 'r6F0PW7YI29iwFMsihy6vhnCEoyq8l7Lz7TwYKkh0/4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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