SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '33c56b21efd951e1fc81f9a4bf53492f4623b2c8869c71c8c7e4a05413ce07b6' 
  AND token = 'Eg3joBXVmxxuQFhuzcVLCLeTqfsgdNrlwchOlVZHHPA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00062

JSON explain

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