Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b4f41cfd5c5b2d241df5e78f56d5085ce60eb527bfd5f5e6467d3efef12072c2' 
  AND token = '0Wf0J4H2sMLX+pKmb+ZtfGKRXPAuhKwH0u72cnVaeaY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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