Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '414ef876bb3de9ae3eb1b780f55d2246bd0d33aa40c1533036a8e3ef4ec96193' 
  AND token = 'Wy+o7asqPn3k/6HtMDmYVS5ARlqJyAs3rMkNOyVPH5Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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