Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7fe395a150dc6dd2cec1e246d0454ddff990d17763fb3e8f7eafdf169c1b05bb' 
  AND token = 'YCjtqcpnCdBZIJK9tyqykTB9K8K7ixLXwkpAs7KFJ0U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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