Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e560a72fcd4da73c229ea76dd3b7a2142e2c95a130449a146389f0399f83060c' 
  AND token = 'FtulwEI5yh15JgHQD3ZI3RJikrbR/JgawENQjd2JMdE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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