Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e8ef8c9f8659e7515589cf4c014ec3813125a20cde6dd5e600444670e709c524' 
  AND token = 'uGQkrkrA7f/DwG9slf56L4Ev9x/oCpsHsZmSWNmZG38=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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