Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '454927652abde700b7c38ae2c80d0b7c48774882575da3246a25c9abdd3e10f9' 
  AND token = 'icV7Srbo7O2miP2fDDC/4EWQZiY5+7kE3iZeCRh4qaw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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