Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'de0caa2b7a94513e286a5bbf6eea622f39ef0fadab2157876fc013f93b67f2d5' 
  AND token = 'SKfb7VgKd6mEasutsd2V4o1UQqDhoxlvUvljMNeN8tA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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