Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '40fee9b0244f6d1ea6a296ebb5053ac3546db5a7672d3103d94b093f6cf1bb22' 
  AND token = 'uwQ1MqkhwNXU3iIqBSpmd1X5a53udIdfHP7+i60xmbI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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