Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'abd0cf68bce22f95af702bc6e8c8669ffcac45876392f193aeeca31375a13d0a' 
  AND token = 'Qm+DEm0kTxvdNr86mG0sU8G05cDwSPrf3HLCXG+WmWU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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