Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a83c5cd7e8e19a4591e14862c20a826eacab812592945fa4e0cac4fdb9cdaa84' 
  AND token = 'xA11zJdXTS2tf41U9msCG3+TwPF8YP4HaziF6EV8nP0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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