SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '225021efa6d4b6b5c248bb65f8056838b705b5e4df73182df853ba14a3ff379a' 
  AND token = 'cB0KK6pPe6r5iTg5ptVUqfdxCRXblTvZfZDni/tzU+Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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