Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02e92f25e2cf95df45ebca7c9270a62f3027d1aa7c08e907c11a5c0740546387' 
  AND token = 'ax0AJlM2/emPb9jGcZ8tHcqNxzNJ4do7S18iZt/YRrc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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