SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '53aaa70fdb7a08e4b33f66e12758602feecf38e51236edfac18f42b6d3aa5a13' 
  AND token = 'fvEtjjmolRe4wSYd9z5+U7QnF9+miPt0hy/tfnFKGXs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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