Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '31fbeea4b97a8a255db7d1480969dcf502b728ec66f6b77007a09d6785ba8d2d' 
  AND token = '3ysXtAjSb4KhX19WmZ+qVYBaoN3gxnzqO5EWeMrR0/s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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