Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '36e60af7b147213f9fee6868330971dced9063bbc7906035421ad8652321b987' 
  AND token = 'xYcX/h/iZnhFNFNfei577HDt5ivlP2u1iJDAmVd3eCo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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