Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd75549973c5962342d5fdf88f1b1e7f7146247e9cb1959aa5fa9d08181587a33' 
  AND token = 't5+fXTY2W9PMToTXv1RVW/mV6waOVTWPQ6CBquVRHYE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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