SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1c1fa96e3a8f164c7f177a53a94016893b0d755150e39160de95558b151920dc' 
  AND token = 'gzI/HpZw1GA/VUA1xCUHcmArHIBv7jqS+dDZ/PYc0U4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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