Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ebaa9b001875941e35e2e1b55c23597bdcd18bd51a4893e5cd15bed84010dde' 
  AND token = 'UF8yDboOKEmJekIyyoXNLjdY7UIoCp1xUWOOfIG/JFE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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