Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '67d1bc995a8285aeabbbcb789cd996f3cf80884aae3ad20fa273eb71a3840519' 
  AND token = 'wVPMHMWMDbQGo3HnRGQDu8vvWzs3QDZU91N2LCZpnCo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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