Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6e33d72e8d50a3ebf7612b89345f6d5da2655ad4d0d88546ce1dbfc013290ef0' 
  AND token = 'F29301uCR0K0OkBv+d9D2ulkKyXgUSuAYx9mtzwXhxs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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