Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bb151aeb03a067c02d83072fe925cc118a353834160bcc3eaf61b903b7cc40f0' 
  AND token = 'qbtSE50OEfhRO5mbHfx+v9c3M1k4FFRFIwLELHpJFG8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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