Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0c9b1a598a61d23c95c1ab16eb4e59a8002a5592de2d004f3dcba0f10fd515ae' 
  AND token = 'gGUzpN+ILtL/LKAbUKCUJGQzZehSCOSFudyF+X0le/8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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