Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3ba26c4d9b7573b44543366527d252d38695c77dc0ce069b14853e1700f23763' 
  AND token = 'mxG8jAoCCWA391WmyDYYJJuPisv117Q0at7c6rakZyo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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