Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee1fef5d1fd224c949d4ac53195d4556f437914ba19c8687cd8f8c2693f50600' 
  AND token = 'vBNh26JxUteRy5YeyV3VtT+NkpwffJi8ZrbR3b4wVJY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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