Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6a4d24e5bc41c157f8c8ab62eff22fc325d1ede5853d666a6f58c5c6c6b1855b' 
  AND token = 'fp2XADvuBhjqN/iP/O/l68hTZhxXIuSUxv7uorG4QYE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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