Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee330858b561639a86de2e488b36804d0360c287ffd521f4ef37cba962ffaf69' 
  AND token = 'PSpfsd4LwlfFDvE0EyJfWstmO1o1n8QcGITqxvg2F9g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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