Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '575929e394e4c7419557de93f45a9c007b21fa095a0a007e7ea29390102b88c4' 
  AND token = 'bpwcfA6trDyERHHw+Tum/4R9yu5uMtlYlucxeGyWSQ4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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