Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a0e5dea23a9501b6d8dc3603ae4c7e9a411ffc07d50110fee609213b59788163' 
  AND token = 'y0ysgTESKireqe5nEht3B7EXiko4Y1jtRamNjYDVTUU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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