Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '977096e14c465f83c2a2b25ee3b7d23bb3d4cb0a2842cba6c110c269871ce37b' 
  AND token = 'eOMCUw/dloPMgNhMkY3JbqpeM7Rx7O2Tbqerg5nUjhs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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