SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f2699ff9cb8761efb4cc398ce5401ed8c3f02a6d3bb9d14a427b5fef16377502' 
  AND token = 'uBcYZJ82VOxWk+Y//dhrJhnStQ6hgoFSIwgIoe1+ycE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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