Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cefcecb1308198e68d1a3e74bfde61b2934a0282f7793d14627365641999171b' 
  AND token = 'DkNP1xqE7/YhWs2OSLTeEIH+pUgel7Cjfjb0rLfExjk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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