Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ea87ed1218d2fbaa9c9b74dab8818f9891ed749b4fd47600f42ebc4408da8b0' 
  AND token = '2T/ky9hI7tlWG+3MWa0StbRlA1D+1e4LBoUvoEj3YP4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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