Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '117264d115ce0d32947fd11c1822ab386038a4ab847e787ba2e9e9e30eed8846' 
  AND token = 'XDT8vVRFbHsSVuYYKXQFROBVJkIa7uZqcQEMjpyzMCM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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