Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04b02173dfd91b26264cdbf5a23662e02011d1fa357a47d6663435bdcb363ade' 
  AND token = 'D/PSxl+8VFH6LoeeyMhbd2gXTAgXvf8V6ooc2/wSLiM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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