Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '599dbbc4c1be336264dd08b1529f1258a0064bd57d92123c339656505e191755' 
  AND token = 'xZroE0Sp2oCj7nhpYRC4MAe0j7nSVMooQ7AS9qqqrFE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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